Enumerate all Site Collections in a SharePoint Farm

// BEGIN EnumSiteCollections.cs
using System;
using Microsoft.SharePoint;
using Microsoft.SharePoint.Administration;

namespace EnumSiteCollections
{
class Program
{
static void Main(string[] args)
{
foreach (SPWebApplication wa in SPWebService.ContentService.WebApplications)
{
foreach (SPSite sc in wa.Sites)
{
try
{
Console.WriteLine("Do something with site at: {0}", sc.Url);
}
catch (Exception e)
{
Console.WriteLine("Exception occured: {0}\r\n{1}", e.Message, e.StackTrace);
}
finally
{
sc.Dispose();
}
}
}
}
}
}
// END EnumSiteCollections.cs